ticket:11009: Add number format specification conformance tests to ICU4C

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36061 251d0590-4201-4cf1-90de-194747b24ca1
ticket:11009: Added numfmtspectest.cpp in VC project file.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36065 251d0590-4201-4cf1-90de-194747b24ca1
ticket:11009: Fix C NumberFormatSpecification tests.

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36066 251d0590-4201-4cf1-90de-194747b24ca1